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Established in 2001, Puyang Zhong Yuan Restar Petroleum Equipment Co.,Ltd, “RSD” for short, is Henan’s high-tech enterprise with intellectual property advantages and independent legal person qualification. With registered capital of RMB 50 million, the Company has two subsidiaries-Henan Restar Separation Equipment Technology Co., Ltd We are mainly specialized in R&D, production and service of various intelligent separation and control systems in oil&gas drilling,engineering environmental protection and mining industries.We always take the lead in Chinese market shares of drilling fluid shale shaker for many years. Our products have been exported more than 20 countries and always extensively praised by customers. We are Class I network supplier of Sinopec,CNPC and CNOOC and registered supplier of ONGC, OIL India,KOC. High quality and international standard products make us gain many Large-scale drilling fluids recycling systems for Saudi Aramco and Gazprom projects.

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Chemical oxygen demand - Wikipedia
Chemical oxygen demand - Wikipedia

Because of its ,high concentration, in most ,wastewater,, chloride is often the most serious source of interference. Its reaction with potassium dichromate follows the equation: 6 C l − + C r 2 O 7 2 − + 14 H + → 3 C l 2 + 2 C r 3 + + 7 H 2 O {\displaystyle \mathrm {6Cl^{-}+Cr_{2}O_{7}^{2-}+14H^{+}\rightarrow 3Cl_{2}+2Cr^{3+}+7H_{2}O} }

Photoinduced reduction of high concentration Hg(II) to ...
Photoinduced reduction of high concentration Hg(II) to ...

1/5/2018, · High concentration Hg(II) containing acidic wastewater was treated with UV irradiation in the presence of, fulvic acid, and, chloride, ions. This process included the photoreduction of Hg(II) to Hg(I) and the generation of Hg 2 Cl 2 precipitants. The amount of produced Hg(0) was negligible indicating the prevention of possible secondary air pollution.

TREATING INDUSTRIAL WASTEWATER – Flexi Systems
TREATING INDUSTRIAL WASTEWATER – Flexi Systems

Our High Concentration Cyanide Decomposition System can treat wastewater containing cyanide with concentrations of, up to hundred thousands PPM, and achieve 99.99% removal rate. It does not use liquid bleach and is therefore environmentally friendly.

Resource utilization of pickling wastewater (waste acid)
Resource utilization of pickling wastewater (waste acid)

Bipolar membrane method is a kind of membrane separation method, which is suitable for the treatment of ,acid, pickling ,wastewater, (waste ,acid,) with ,high acid concentration,. Membrane separation is a highly efficient process for the separation of metal ions and acids with ,high, selectivity of membrane to ions, which can fully recover acids and metal salts.

AN INVESTIGATION INTO THE EFFICACY OF EGGSHELLS AS A …
AN INVESTIGATION INTO THE EFFICACY OF EGGSHELLS AS A …

for nickel and 80% for ,zinc,. Aluminium, ,iron,, potassium, nickel and ,zinc, ions all had percentage adsorptions above 75% in AMD Sample 1. Potassium had a 98.78% adsorption while magnesium, strontium and ,zinc, had 72.33; 68.75 and 53.07% adsorption respectively in Sample 2.

Test Lists - Water Integrated Treatment Systems Inc. (708 ...
Test Lists - Water Integrated Treatment Systems Inc. (708 ...

Zinc, by EPA Method 200.7 Determines ,zinc, in the dissolved fraction of aqueous samples and for the measurement of total-recoverable analytes in water, ,wastewater,, and solid wastes. Zirconium by EPA Method 6010C Trace elements in solution by Inductively Coupled Plasma - Atomic Emission Spectroscopy (ICP-OES)

Treatment of High Concentration Acid Plasticizer ...
Treatment of High Concentration Acid Plasticizer ...

9/7/2020, · This technique has great practical application prospects in treating ,high concentration, organic ,acid wastewater,. This is a preview of subscription content, log in to check access. Access options Buy single article. Instant access to the full article PDF. US$ 39.95. Price includes VAT for USA.

Managing Industrial Solid Wastes From Manufacturing ...
Managing Industrial Solid Wastes From Manufacturing ...

determination, that retained the Bevill exclusion for all 20 wastes and proposed regulating 18 of them under Subtitle D.9 EPA concluded that the other two wastes (phosphogypsum and phosphoric ,acid, proc-ess ,wastewater,) had significant risks associated with current management practices and had caused envi-ronmental damage. However, EPA determined that

[Treatment of high-concentration butyl-acrylate-production ...
[Treatment of high-concentration butyl-acrylate-production ...

When the influent COD ,concentration, was increased to 9550-11,800 mg/L(acrylic ,acid, of 6244 mg/L and p-toluenesulfonic ,acid, of 1000 mg/L), the effluent COD was 271-360 mg/L, which satisfied the demand of Class III in Chinese Integrated ,Wastewater, Discharge Standard (GB 8978-1996) at COD loading rates of 7.96-9.83 kg/(m3 x d).

Effect of Heavy Metals Emissions on Ecosystem of Pakistan ...
Effect of Heavy Metals Emissions on Ecosystem of Pakistan ...

Environmental contamination is one of the significant problems of modern society. Heavy metal pollutants include ,zinc,, arsenic, nickel, cadmium, copper, lead, chromium, manganese, ,and iron, etc. Their universal bioavailability accumulation in the food chain causes severe effects on human health. The lives of living species will be preserved by unique heavy metal treatments to improve the air ...

Treatment of High Concentration Acid Plasticizer ...
Treatment of High Concentration Acid Plasticizer ...

Using the ozone microbubble process to treat high-concentration acidic plasticizer, wastewater, is in line with the concepts of green, energy-saving, and environment friendly.

RECONNAISSANCE FOR DETERMINING EFFECTS OF LAND USE …
RECONNAISSANCE FOR DETERMINING EFFECTS OF LAND USE …

1979 and analyzed for sorbed and ,acid,-soluble metals including aluminum, cadmi­ um, chromium, copper, cobalt, ,iron,, lead, manganese, mercury, nickel and ,zinc, and several nonmetals, total arsenic, boron, and selenium. Analysis of variance indicated that differences in land use accounted for

pH In Wastewater Treatment Alkalinity In Wastewater Treatment
pH In Wastewater Treatment Alkalinity In Wastewater Treatment

A solution with ,high, alkalinity would consume added ,acid, without changing pH until the alkalinity is gone, but any additional ,acid, will then affect the pH. In ,Wastewater, The bacteria and other organisms which play an active role in ,wastewater, treatment are most effective at a neutral to slightly alkaline pH of 7 to 8.

[Treatment of high-concentration butyl-acrylate-production ...
[Treatment of high-concentration butyl-acrylate-production ...

When the influent COD concentration was increased to 9550-11,800 mg/L(acrylic acid of 6244 mg/L and p-toluenesulfonic acid of 1000 mg/L), the effluent COD was 271-360 mg/L, which satisfied the demand of Class III in Chinese Integrated Wastewater Discharge Standard (GB 8978-1996) at COD loading rates of 7.96-9.83 kg/(m3 x d).

[Pretreatment of high-concentration acrylic acid ...
[Pretreatment of high-concentration acrylic acid ...

A multi-stage microaerobic biological fluidized bed reactor was used for the pretreatment of synthetic, wastewater, containing high concentration of, acrylic acid, (AA). The effect of influent load was investigated and the intermediate products of, acrylic acid, degradation were analyzed. It indicated that the removal rate of AA was above 95% with ...

Wastewater Disinfection with Peracetic Acid (PAA) and UV ...
Wastewater Disinfection with Peracetic Acid (PAA) and UV ...

Combining UV with peracetic ,acid, (PAA) is one of such possibilities. Peracetic ,acid, (PAA) is a strong oxidizing compound with a wide spectrum of antimicrobial/biocidal properties. It is a clear and colorless liquid commercially available at a ,concentration, of 12% to 15% in an equilibrium mixture of acetic ,acid,, hydrogen peroxide and water:

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